LabelTTF limit is 20,152, can we get more?

[slackmoehrle]

• cocos2d-x version: v3

LabelTTF has a limit of 20,152. Some users want up to 30,000.

void I18n_Historys::loadHistoryOnline(unsigned int h_id)
{
    _curr_history->text = "";
    for(int i=0; i<30000; i++)
    {
        _curr_history->text = _curr_history->text + "0";
    }
    if(_onHistoryCallback)
        _onHistoryCallback(true);
}

[stevetranby]

I question whether this is available for all devices. I think the solution may need to be restrict text length to 2^16/4bytes (e.g. 16384). Not sure where the limit 20152 comes from, but maybe spaces don't affect the vert count and thus allow larger length limit?

[stevetranby]

Cross-discussion:
#19160 (comment)

I think that to support/fix this Issue cocos2d should handle creating additional vertex buffers in order to render beyond 10k letters. As a practical matter the only situation I see a need for this is in scrolling?

[drelaptop]

similar same issue #17946

[drelaptop]

fix by strip the extra text, refer to #19174